/* Generic collapsible nested lists (.org-ul li.has-subtree): the triangle
 * indicator and expand/collapse transition. Used wherever a page has a
 * nested list — the homepage's All Notes tree, and any plain nested list
 * in an article. Toggled by index.js. */

/* Foldable items: replace bullet with triangle, pointer cursor */
.org-ul li.has-subtree {
  cursor: pointer;
  list-style-type: none;
}

/* Triangle indicator */
.org-ul li.has-subtree::before {
  content: "▸";
  display: inline-block;
  margin-right: 0.4em;
  font-size: 0.8em;
  line-height: 1;
  transition: transform 0.25s ease;
  vertical-align: middle;
}

/* Rotate triangle when expanded */
.org-ul li.has-subtree.expanded::before {
  transform: rotate(90deg);
}

/* Collapsed: hide child lists with transition */
.org-ul li.has-subtree > ul {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.25s ease;
}

/* Expanded: reveal child lists */
.org-ul li.has-subtree.expanded > ul {
  max-height: 20000px;
  opacity: 1;
}